The diversity and distribution of marine macroalgae along the Brazilian coast have been investigated in detail. However, information about the deep-water macroalgal flora remains scarce, available mostly in scattered publications or gray literature. In this context, the aim of this study was to describe three specimens of Rhodophyta (Cottoniella fusiformis, Frikkiella searlesii and Branchioglossum cf. minutum) collected in the deep waters of the continental shelf off the coast of the state of Espírito Santo during expeditions of the program Evaluating the Potential of Living Resources in the Exclusive Economic Zone. The morphology and distribution of the collected species are detailed, and the taxonomic and biogeographic implications are discussed.